Then under the seat it is, I guess. I was thinking of doing what you did, but the general consensus is under the seat, and you plan on going that way as well....so question answered. More room anyway, and I do have an almost new group 31 180ah deep cycle marine battery plus a DC alternator charger. Once the main battery is charged up, it draws the amps from the alternator to charge the secondary. I guess I will find something else to stick under the hood. Definitely because I don't like looking under there and seeing an opening to underneath. I see wasted space in a rig that is short enough on space. lol